Well i took my e92 m3 a week ago to a dealer in South Florida (that shall remain nameless for right now). I asked for an alignment and balance. Please note I have Dinan Stage 1 suspension and they already knew this. They in fact had aligned the car 1 year ago. The car is not a daily driver and is babied. 1 day after dropping the car off they called me to tell me that the car will not align properly on the left rear wheel within specs. The specs I gave them were Dinan specs as I did last time. They mentioned that the left rear wheel will not even align to factory specs. I showed up at the dealer and walked to the back bay and spoke with the tech and advisor who I tip generously every time i go there. They kept insinuating that I had crashed the car or hit a huge pothole. This never happened. the only person other than me that has driven this car is them and i told them that. They said we think its 100% the wheel carrier and it will be $2100 to fix. I was furious. They said this part is never warrantied even without aftermarket springs. 2 days ago they called me and said they replaced the part but the wheel will still not align within specs. So they said they are going to try replacing the control arm. I'm now being told that its a trial and error process at this point and whether or not the parts fix it i will still get charged for the labor. I'm totally perplexed by the treatment im receiving here. I never ever did anything to the car and never so much as even went over a speed bump going more than 2 mph. They even said it themselves that its not due to the springs. Seems like me they are just trying to stick me with a bill.

Don't hesitate to call BMW North America and start freaking out! I had a similar situation with my M6s' oil cooler. The dealer tried to tell me I "crashed" the car and broke the cooler (not at all the case). I got BMW NA involved and had my car fixed at no charge in one day.

Take it to Alignment Factory. I actually have to take my car there soon as well. I've heard nothing but good things about them and they aren't expensive. Even Active and Wheels Boutique told me to take it to them.

What angle won't come into spec? Camber or toe? What is the current spec and what is the desired? IF the wheel carrier (knuckle) was causing the angle not to come into spec, it's because it's bent. That's the only reason it wouldn't be covered. Like a broken windshield, curbed wheel etc. find out what angle(s) are not coming into the desired range and let's start from there. Forget all the stealership talk, that's the typical term used by those who can't afford to take their cars in and clearly over reached when they purchase their cars used....